def solve_israil(n):
	if 400<=n and n<=599:
		return 8
	elif 600<=n and n<=799:
		return 7
	elif 800<=n and n<=999:
		return 6
	elif 1000<=n and n<=1199:
		return 5
	elif 1200<=n and n<=1399:
		return 4
	elif 1400<=n and n<=1599:
		return 3
	elif 1600<=n and n<=1799:
		return 2
	else:
		return 1
									


n=int(input())
print(solve_israil(n)) def solve_israil(n):
	if 400<=n and n<=599:
		return 8
	elif 600<=n and n<=799:
		return 7
	elif 800<=n and n<=999:
		return 6
	elif 1000<=n and n<=1199:
		return 5
	elif 1200<=n and n<=1399:
		return 4
	elif 1400<=n and n<=1599:
		return 3
	elif 1600<=n and n<=1799:
		return 2
	else:
		return 1
									 solve_israil if 400<=n and n<=599:
		return 8
	elif 600<=n and n<=799:
		return 7
	elif 800<=n and n<=999:
		return 6
	elif 1000<=n and n<=1199:
		return 5
	elif 1200<=n and n<=1399:
		return 4
	elif 1400<=n and n<=1599:
		return 3
	elif 1600<=n and n<=1799:
		return 2
	else:
		return 1
									 400<=n and n<=599 400<=n 400 n n<=599 n 599 return 8 8 elif 600<=n and n<=799:
		return 7
	 600<=n and n<=799 600<=n 600 n n<=799 n 799 return 7 7 elif 800<=n and n<=999:
		return 6
	 800<=n and n<=999 800<=n 800 n n<=999 n 999 return 6 6 elif 1000<=n and n<=1199:
		return 5
	 1000<=n and n<=1199 1000<=n 1000 n n<=1199 n 1199 return 5 5 elif 1200<=n and n<=1399:
		return 4
	 1200<=n and n<=1399 1200<=n 1200 n n<=1399 n 1399 return 4 4 elif 1400<=n and n<=1599:
		return 3
	 1400<=n and n<=1599 1400<=n 1400 n n<=1599 n 1599 return 3 3 elif 1600<=n and n<=1799:
		return 2
	 1600<=n and n<=1799 1600<=n 1600 n n<=1799 n 1799 return 2 2 return 1 1 n n n=int(input()) n int(input()) int input() input print(solve_israil(n)) print solve_israil(n) solve_israil n def solve_israil(n):
	if 400<=n and n<=599:
		return 8
	elif 600<=n and n<=799:
		return 7
	elif 800<=n and n<=999:
		return 6
	elif 1000<=n and n<=1199:
		return 5
	elif 1200<=n and n<=1399:
		return 4
	elif 1400<=n and n<=1599:
		return 3
	elif 1600<=n and n<=1799:
		return 2
	else:
		return 1
									 def solve_israil(n):
	if 400<=n and n<=599:
		return 8
	elif 600<=n and n<=799:
		return 7
	elif 800<=n and n<=999:
		return 6
	elif 1000<=n and n<=1199:
		return 5
	elif 1200<=n and n<=1399:
		return 4
	elif 1400<=n and n<=1599:
		return 3
	elif 1600<=n and n<=1799:
		return 2
	else:
		return 1
									 solve_israil n=int(input()) int(input()) n
def solve_israil(n):
	if 400<=n and n<=599:
		return 8
	elif 600<=n and n<=799:
		return 7
	elif 800<=n and n<=999:
		return 6
	elif 1000<=n and n<=1199:
		return 5
	elif 1200<=n and n<=1399:
		return 4
	elif 1400<=n and n<=1599:
		return 3
	elif 1600<=n and n<=1799:
		return 2
	else:
		return 1
									


n=int(input())
print(solve_israil(n))